From 93bccbc1d2e4448e49cad974bfdcc1b4e24b7d7b Mon Sep 17 00:00:00 2001
From: Philippe Capdepuy <phcapde@gmail.com>
Date: Wed, 2 Oct 2019 23:38:51 +0200
Subject: [PATCH] flip display only if tab is visible (fixes memory leak on
 inactive tab), fixes issue #1302

---
 core/rfb.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/rfb.js b/core/rfb.js
index dfcab7c6..e972affa 100644
--- a/core/rfb.js
+++ b/core/rfb.js
@@ -1483,7 +1483,10 @@ export default class RFB extends EventTargetMixin {
             this._FBU.encoding = null;
         }
 
-        this._display.flip();
+        if (!document.hidden) {
+            this._display.flip();
+        }
+        
 
         return true;  // We finished this FBU
     }